Lenovo A7-50 Tablet - Manual (Page 3)

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About this manual........................................iv
Safety information.........................................1
General safety ...................................................... 2
Electrical safety .................................................... 3
Safety inspection guide ...................................... 5
Handling devices that are sensitive to electro-
static discharge .................................................... 6
Grounding requirements ................................... 6
Safety notices: multilingual translations.......... 7
Laser compliance statement............................. 14
Important service information ...................16
Strategy for replacing FRUs............................. 16
Important notice for replacing a system
board ............................................................. 17
Important information about replacing RoHS
compliant FRUs ................................................. 18
General checkout ........................................19
What to do first .................................................. 20
Power system checkout .................................... 21
Checking the Computer AC Charger....... 21
Checking the internal battery status......... 22
Related service information .......................23
Security ............................................................... 23
Power management .......................................... 23
Activating/Deactivating the Display....... 23
Lenovo A3500..............................................24
Specifications ..................................................... 24
FRU replacement notices.................................. 26
Screw notices................................................ 26
Removing and replacing an FRU.................... 27
1010 Rear cover and side key..................... 28
1020 Battery pack......................................... 31
1030 Rear camera......................................... 35
1040 PCBA .................................................... 37
1050 Receiver................................................ 48
1060 Power key FPC ................................... 49
1070 Volume key FPC................................. 50
1080 Reset key FPC ..................................... 51
1090 Front camera ....................................... 52
1100 Speaker and antenna assembly ........ 53
1110 Microphone ......................................... 57
1120 Vibrator motor .................................... 59
1130 Main FPC ............................................. 61
Locations............................................................. 65
Front view .................................................... 65
Rear view ...................................................... 66
Parts list............................................................... 67
Overall ........................................................... 67
Screw ............................................................. 69
Notices .........................................................70
Trademarks......................................................... 71
Contents